FAQ

Using BIGtensor

Q. How do I prepare tensor?

A. BIGtensor works on graphs in TAB-separated plain text format. Each line corresponds to an element, and contains indices of each mode and the value. The index starts from 1. For example, here is a 3-mode tensor. The first line shows that the element at the position (1, 2, 4) is 1, and the second line shows that the element at the position (3, 4, 1) is 2.

1   2   4   1
3   4   1   2
4   1   3   1
1   1   1   2
1   3   3   1
1   4   1   2
1   1   2   1
1   2   1   2
                

Q. How do I setup hadoop cluster?

A. In most cases, you will use a Hadoop cluster set up by someone else, and thus you don't need to set up a Hadoop cluster by yourself. However, you might want to set up a Hadoop cluster for yourself for some occasions. In that case, here are several useful documents:

Hadoop Cluster Setup
Cloudera Hadoop Distribution

Note that Hadoop works on a single machine, too. Thus, you can run Hadoop and BIGtensor on a single machine like your laptop. For setting up Hadoop on a single machine, refer to the following web page:

Hadoop Single-Machine Setup



About BIGtensor

Q. What are the main advantages of BIGtensor?

A. The most important advantage of BIGtensor is the scalability. BIGtensor provides tensor mining algorithms for billion-scale tensors which are serveral orders of magnitude larger than previous works can handle. Other advantages include the ability to analyze tensor data on Hadoop clusters.

Q. What is the future of BIGtensor?

A. BIGtensor will be extended to include more tensor analysis algorithms, and incorporate efficient indexing methods for tensors.